AAA does, or at least did, offer an RV rider on their membership at least in some states.
Hoiwever Coachnet and other roadside service plans are better bargains
I forget how much AAA charged for RV coverage and then they did not have a lot of service trucks which could handle a 20 thousand lb rig, but other plans were cheaper when I researched.
One thing about AAA, Each state has slightly different plans, IN some cases there may be 2 or more different AAA's in the same state in fact. I belong to AAA Michigan so it is them I researched.
But should my rig need a tow.. It's not AAA I call